A couple of calculators (back and lay) developed for users of Betfair. The main issue of Betfair's betting slip is that it doesn't show the commission charged on winning bets (5% base rate) so the actual profit (and odds) is always lower than what users see. Our tools give the real picture.

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Back Backer's stake: Backed odds: Discount rate % Commission: Net profit after commission: Odds after commission:

Lay Liability (layer's stake): Laid odds: Discount rate % Backer's stake: Commission: Profit (backer's stake) after commission: Reverse (winning) odds after commission:

* The discount rate is reducing the commission charged by Betfair based on the user's activity, it can be seen in "My account". Not important and can be ignored (left to 0) by everyone not trading big volumes on regular basis. * "Reverse (winning) odds" - meant for better comprehension of the lay bet, in fact when the punter lays a selection at certain odds he backs all other possible outcomes at odds which we will label as "reverse" (even if the term is not sophisticated).

"Cover" Bet

Knowing "Draw No Bet" shows the idea behind this calculator which goes further making it possible to combine bets of any kind. The main bet is meant to deliver net profit and the "covering" bet to return the overall stake if the main selection fails.

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Total stake:
Odds for the main selection:	Odds for the "covering" selection:
Clear all fields
Stake on the main selection:	Stake on the "covering" selection:
Total odds:

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Total stake:
Odds for selection #1:	Odds for selection #2:
Clear all fields
Stake on selection #1:	Stake on selection #2:
Total odds:

The Kelly's Criterion is a popular money management system (details can be found doing a Google search) based on formula which we have implied "as is" in our calculator. Please note that we don't recommend Kelly's Criterion in its primary mode, cautious staking should be limited to minor part from what the formula gives as result. Another simple option is the "Stake manager" based on similar idea.

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Kelly's Criterion Your bankroll: Odds: Probability: % Clear all fields Stake:

Stake Manager Your bankroll: Odds: Value: Low Medium High Clear all fields Recommended stake:

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Odds #1: Odds #2: Payout %:

Odds #1: Odds #2: Odds #3: Payout %:

	bet365	Review	100 EUR
	Unibet	Review	20 GBP
	Nordicbet	Review	100 EUR
	Ladbrokes	Review	10 GBP
	Paddy Power	Review	10 GBP
	Gamebookers	Review	30 EUR
	Pinnacle	Review
	Canbet	Review	25 GBP
	bet-at-home	Review	22 EUR
	Titanbet	Review	250 EUR
* Bonuses may vary or be available depending on the customer's country.

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